One 'n only Colorfix gently removes permanent hair color no matter how long it has been in hair. It is effective on all hair types and it leaves the hair in optimum condition. It does not contain ammonia, or formaldehyde. Gently removes permanent hair color no matter how long it has been in hair Easily removes any level of hair color Effective on all hair types - leaves hair in optimum condition Gently removes permanent hair color without bleach Easily removes any level of hair color without affecting hair's natural pigment